package com.scedu.spring5;

public class UserDaoImpl implements UserDao {
    @Override
    public Integer add(Integer a, Integer b) {
        System.out.println("add 被执行了");
        return a+b;
    }

    @Override
    public String update(String id) {
        System.out.println("update 被执行了");
        return id;
    }
}
